Milestone 0: import zappier billing, Verae middleware, and Zapier research

Compose-ready workspace: packages/zappier (rate card, portal, Stripe),
packages/verae-zapier-middleware (timestamp + NATS), packages/verae-zapier
(CLI app), vendor/zapier-platform, and research/zapier vendor corpus.

Gate 0 structure checks pass. Product code and research are not yet wired.

research/zapier/raw/docs/integrations/news/2025/v17.9.0.md

@@ -0,0 +1,24 @@
+> ## Documentation Index
+> Fetch the complete documentation index at: https://docs.zapier.com/llms.txt
+> Use this file to discover all available pages before exploring further.
+
+# What's changed in v17.9.0
+
+> Bugfix for snapshot flag, improvements for `zapier env`.
+
+*Released: 2025-10-20*
+
+This release fixes an issue with validation for labeled versions, and improves failures on `zapier env:set`.
+
+## cli
+
+* 🐛 Validate snapshot labels for 12 chars instead of 18 ([#1182](https://github.com/zapier/zapier-platform/pull/1182))
+* 💅 Display failure reasons for env:set ([#1180](https://github.com/zapier/zapier-platform/pull/1180))
+
+## core
+
+None!
+
+## schema
+
+None!